<template>
	<view>
	<view class="smart-page-head">
		<view class="smart-page-head-title">text 文本组件</view>
	</view>
	<view class="smart-padding-wrap">
		<view class="text-box" scroll-y="true">
			<text>{{text}}</text>
		</view>
		<button type="primary" :disabled="!canAdd" @click="add" >add line</button>
		<button type="warn" :disabled="!canRemove" @click="remove" >remove line</button>
	</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				texts: [
					'HBuilder,400万开发者选择的IDE',
					'HBuilderX,轻巧、极速,极客编辑器',
					'uni-app,终极跨平台方面',
					'HBuilder,400万开发者选择的IDE',
					'HBuilderX,轻巧、极速,极客编辑器',
					'uni-app,终极跨平台方面',
					'HBuilder,400万开发者选择的IDE',
					'HBuilderX,轻巧、极速,极客编辑器',
					'uni-app,终极跨平台方面',
					'......'
				],
				text:'',
				canAdd:true,
				canRemoe:false,
				extraLine: []
			};
		},
		methods: {
			add: function(e) {
				this.extraLine.push(this.texts[this.extraLine.length%12]);
				this.text = this.extraLine.join('\n');
				this.canAdd = this.extraLine.length < 12;
				this.canRemoe = this.extraLine.length > 0;
			},
			remove: function(e) {
				if(this.extraLine.length > 0){
					this.extraLine.pop();
					this.text = this.extraLine.join('\n');
					this.canAdd = this.extraLine.length < 12;
					this.canRemoe = this.extraLine.length > 0;
				}
			}
		}
	};
</script>

<style>

</style>
